Analysis of protection coordination of the electrical distribution system of the University of the Philippines Los Baños (UPLB)

Date

6-2015

Degree

Bachelor of Science in Electrical Engineering

Major Course

Major in Power Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Roderick L. Catriz

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

The University of the Philippines Los Baños (UPLB) is an institution that needs a continuous supply of electrical energy to serve its facilities, but in the past years, UPLB experienced an average of two interruptions per year due to the lack of proper maintenance and protection. Hence, the need to conduct coordination analysis that will give a proper understanding of the protection given by the protective devices installed in the distribution system is essential. This study focused on the simulation of coordination checks in Synergi Electric 5 using protection rules and specifications of the components in the system such as the distribution fuses, circuit breakers, reclosers and transformers. Simulation result shows that in 1158 coordination checks in the system, 80 checks have failed, and most of these failed coordination occurred between the transformers and its protective devices. Also, corrections to the failed coordination in the system were made through the analysis on the time-current characteristics (TCC) curves, in which hierarchical leveling was considered based on the rule violations. Correction results showed that correcting rule violations made by the coordination on the highest level of the hierarchy, which is the transformer-fuse and transformer-breaker pair, solved all of the failed coordination in the distribution system, thus implying that all other rule violations are dependent on the rule violations found in the highest level of the hierarchy.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2015 E64 /E87

Document Type

Thesis

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